单片机编程软件keil问题

汇编源程序T02SA EQU 30HT02SB EQU 31HFLAG BIT 00HORG 00HLJMP STARTORG 0BHLJMP INT_T0START: MOV T02SA,#00HMOV T02SB,#00HCLR FLAGMOV TMOD,#01HMOV TH0,#(65536-500) / 256MOV TL0,#(65536-500) MOD 256SETB TR0SETB ET0SETB EASJMP $INT_T0:MOV TH0,#(65536-500) / 256MOV TL0,#(65536-500) MOD 256INC T02SAMOV A,T02SACJNE A,#100,NEXTINC T02SBMOV A,T02SBCJNE A,#04H,NEXTMOV T02SA,#00HMOV T02SB,#00HCPL FLAGNEXT: JB FLAG,DONECPL P1.0DONE: RETIEND这个汇编程序不能够编译成功 收起